Sash-lock.



G. F. SBIDENBECKBR.

SASH LOCK.

APPLICATION FILED Nov. 4, 1910.

1,020,454 Patented Mar. 19, 1912.

/ EE w/ CWM @im GROTTEB F. SEIDENBECKER, OF CHICAGO, ILLINOIS.

SASH-LOGK.

Specification of Letters Patent.

Patented Mar. 19, 1912.

Application filed November 4, 1910. Serial No. 590,701.

To all 'wh-0m t may concern.'

Be it known that I, GRovnR F. Sarnan- BECKER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements lin Sash- Locks; and I do declare the :following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to sash locks and has for its object to provide a simple and inexpensive construction for locking together the upper and lower sash of a window and for also locking the lower sash securely against movement.

A further object of this invention is to provide a sash lock which is so constructed and arranged that the upper and lower sash can be locked together either when the upper sash is entirely raised or when it is only partly raised.

vWith these objects in view this invention consists in the novel construction of the sash lock and in the construction for simultaneously locking the lower sash to the window frame and also to the upper sash.

This invention also consists in certain other novel details of construction and in combinations of parts all of which will be first fully described and afterward specilically pointed out in the appended claims.

Referring to the accompanying drawing: Figure 1 is a vertical sectional view through the upper portion of a lower window sash and window frame. Fig. 2 is a similar view illustrating the sash in locked position. Fig. 3 is a horizontal sectional view through the upper part of a lower window sash and the lower part of an upper window sash. Fig. 4l is an elevation of the upper part of a lower window sash. Fig. 5 is a fragmentary horizontal sectional View illustrating the lower window sash and the upper' window sash locked together, and Fig. 6 is a sectional view of the locking lever and plate.

Like numerals of reference indicate the same parts throughout the several figures in which;

1 indicates the lower window sash, 2 the upper window sash and 3 the window frame. As will appear from Figs. 1, 2 and 3 the window frame 3 on each side of the lower sash 1 is provided with a plate l perforated at 5, while it will be apparent from Figs. 3 and 4 that the upper window sash is provided along its edges with a plate 6 having a plurality of openings 7 therein.

Referring now to the lower window sash l it will be seen that in an upper portion thereof I provide a recess 8 and in this recess 8 is a casing 9 having a face plate 10 which is set into the window sash so as to be flush therewith as clearly shown in Figs. 3 and 1. W'ithin the casing 9 is the operating mechanism for the sash lock which mechanism comprises a lever 11, said lever 11 being centrally pivotcd at 12 and is provided with a rectangular projection 13 so as to receive a key 14 as shown in Fig. 3. The ends of the lever 11 are preferably provided with rollers 15 and arranged within the casing 9 and in engagement with the rollers 15 are two cams 16, said cams 16 having as shown a curved or rounded surface 17 and a central rounded depression 18. Connected to the cams 16 are the locking rods 19, said rods 19 being disposed within the window sash and passing therefrom into the perforations 5 in the plates 4 on the window frame 3 as clearly shown in Fig. 2.

Pivoted on a plate 20 on the lower window sash 1 is a locking lever 21, said locking lever 21 having arms 22 and 23 which arms are preferably disposed at a slight angle to each other as clearly shown in Figs. 3 and 5. As will appear` from the drawings the arm 22 of the lever 21enters a recess 24 in the locking rods 19 it being of course understood that one of these locking levers 2l is arranged at each corner of the lower window sash as clearly shown. `While the arm 22 on each locking lever 21 enters a notch 24 in each locking rod 19 the arm 23 on each locking lever 21 passes through a slot 25 in the plate 20. As will appear from the drawings the plates 6 which are provided with recesses 7 and which are arranged on the upper sash 2 are located directly behind the locking levers 21 in such manner that the arms 23 of said levers can enter the opening 7 in the plates 6. As will appear from Figs. 1 and 2 a plurality of coil springs 26 are provided within the casing 9 and behind the cams 16, said springs bein of an extension strain and normally tending to hold the cams 16 and locking rods 19 in an unlocked position as shown in Fig. 1.

Having thus fully described the several parts of this invention its operation is as follows: When it is desired to lock the lower window sash to the window frame and also to the upper window sash the key 14 is inserted in the face plate 10 covering the lock operating mechanism and the key is turned until the lever 11 is in position shown in Fig. 2. The rollers 15 on the ends of the lever 11 are operating on the curved surfaces 17 of each of the cams 16 outward and in position shown in Fig. 2. lVhen in this position the rollers 15 enter the central disposed recess 18 in the cams 16 which maintains the lever 11 in the position shown in Fig. 2. As the locking rods 19 are forced outwardly they enter the recess 5 in the plates 4f on the window frame and simultaneously throw the arm 23 on each locking lever 21 into the openings 7 in the plates 6 on the upper sash 2 as clearly shown in Fig. 5, thus the lower sash is simultaneously locked to the window frame and also to the upper sash. As the plates 6 on the upper sash are provided with a plurality of openings 7 the two sash can be locked together either when the upper sash is in a closed position or when it is partially opened or when it is entirely lowered. As the sash lock can only be operated from the inside of the lower sash it is clearly evident that neither the upper nor the lower sash can be moved from the outside of the window. As is clearly apparent any form of key can be employed so that if desired one key can only be employed for operating the sash lock on one window, or the locks may be arranged so that the sash in one house or fiat can only be operated by a certain form of key in the same manner as is customary with locks on doors.

Having thus fully described this invention what is claimed as new and desired to secure by Letters Patent of the United States is 1. A sash fastener of the character described for locking together an upper and a lower sash comprising a pair of locking rods transversely movable within a lower window sash, said rods being adapted t0 extend beyond the side edges of the said sash, the casing for the said sash being provided with a plurality of openings for the reception of the said transversely movable locking rods to lock the said sash against movement, a locking lever ,in engagement with each of said locking rods, said locking lever being pivoted to the said sash and movable therewith, one arm of said locking lever extending through the face of said sash, a plate carried on the face of an upper sash contiguous to the said locking lever, said plate being provided with a plurality of openings to receive the said locking lever mounted in the lower sash, means for forcing` the said locking rods outwardly for engagement with the said Openings in the casing for the said sash to lock the said sash against movement and to simultaneously move said locking lever into engagement with the said plate on the said Lipper sash to lock the two sash together, substantially as described and for the purposes set forth.

2. A sash fastener of the character described for locking together an upper and a lower window sash comprising a pair of locking rods transversely movable within a lower window sash, the ends of said locking rods being adapted to pass through the side edges of the sash, means on the casing for the said sash to receive said transversely movable locking rods to lock the said sash against movement, locking levers pivoted in and carried with said sash, said locking levers being in engagement with said transversely movable rods and operated thereby means on an upper sash for receiving said locking levers upon movement of said locking rods to securely lock the said sash together, substantially as described and for the purposes set forth.

In testimony whereof, I affix my signature, in presence of two witnesses.

GROVER F. SEIDENBECKER.

Witnesses:

Jol-IN W. CLARK, SAMUEL W. JAMES.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

